udev experience and tips

xerxes2 · 2004-07-25 10:48:33

no!!!
why should I load things I don't use?

hotplug is for "wimps"

Mr Green · 2004-07-25 10:59:34

Why thank you

Mr Green

rasat · 2004-07-25 13:11:56

xerxes2 wrote:

the wiki says that you "must" use hotplug,
I don't have hotplug in rc.conf and it works anyway.

Same here I don't use hotplug and works fine when having the modules in /etc/rc.conf. Moreover I don't want several pages of hotplug stuff scrolling in my screen during booting.

Mr Green · 2004-07-25 13:41:52

Here you go...

#Hotplug removed as per xerxes2 as hotplug is for wimps...

DAEMONS=(syslog-ng klogd cups !pcmcia network crond netfs xinetd !hotplug portmap fam kdm)

Just to keep the swede happy

Mr Green....

xerxes2 · 2004-07-26 18:02:20

what did I say green!
udev is doing just fine without hotplug.
read here for more info about hotplug http://linux-hotplug.sourceforge.net/
it's a great project.

here is my daemons array.

#I load the mr_green daemon first so he can check that the system is OK! 

DAEMONS=(mr_green syslogd klogd cups !pcmcia network crond netfs !hotplug)

dp · 2004-07-26 18:09:58

where do i get the mr_green daemon?

Xentac · 2004-07-26 18:30:05

I think I know how it goes... anything loaded before the udev daemon starts, gets devices created by udev with no problem. Anything loaded after udev starts needs hotplug to have a device created (ie. modules, etc).

Mr Green · 2004-07-26 20:01:58

dp wrote:

where do i get the mr_green daemon?

I'm working on the GUI wrapper at the moment.......

cs25x · 2004-07-26 20:44:41

I changed my menu.lst to

root=/dev/hda1

and then it all worked. I was getting errors detecting my ps2 mouse & other things with

root=/dev/discs/disc0/part1

The good news is that USB appears to work in a more straightforward manner now. Before I had to mount /proc/bus/usb after I started devfsd to get the camera recognised & sda? created.
via chipset, 82xxx sound rhine nic. All is go 8)
The amlug live arch CD taught me about the /dev/hda1 alteration.

tpowa · 2004-07-27 08:14:44

update from my side
hotplug is not needed to be running as daemon, it should be installed
it sets some modules for you but at startup if you don't want that it is not needed
hotplug is needed for usb-scanners permissions but it has not to be in the daemons list tested it on two pcs

problems rise when no nodes are created and libusb is used
pcmcia is also no problem with no hotplug daemon running
usb-sticks are also recognized
no prob at all

i remove hotplug from the wiki

mctavish · 2004-07-28 03:45:59

back again.

After configuring udev, without hotplug in my daemons list in rc.conf I get this message on startup...

alsactl: load_state: 1134: No soundcards found

...and sound consequently does not work. A little googling failed to enlighten me.

OTOH with hotplug in my daemons list in rc.conf, I get this message on startup...

modprobe: FATAL: Error inserting shpchp (/lib/modules/2.67/kernel/drivers/pci/hotplug/shpchp.ko): Operation not permitted
can't load module shpchp
missing kernel or user mode driver shpchp

...but sound works. I haven't yet seen any tragic consequences I can attribute to this nice error.

So I am happy that sound is going, but I am curious if anyone knows what is going on, and what shpchp is good for.

Also, if hotplug appears in rc.d and as a daemon, doesn't that mean it gets loaded twice? And am I the only one that needs hotplug as a daemon?

EDIT: shpchp seems to be the Standard Hotplug Pci Controller.

xerxes2 · 2004-07-28 15:09:27

my camera only works as root.
I can't find what permission to change!
if someone know, please update the wiki.....

tpowa · 2004-07-28 15:12:19

you have a fstab entry for your camera
with "users" as option?
else try to change /dev/sd* perhaps it helps

xerxes2 · 2004-07-28 15:38:26

I changed my permission for sd* to root:users:660, but I don't have an entry in fstab.
strange it works as root.

Xentac · 2004-07-28 16:05:40

If you don't mount your camera as a hard drive, then you've configured the camera permissions with hotplug. If you don't have hotplug running, it won't set your permissions when the camera is hotplugged.

Mr Green · 2004-07-28 16:13:40

xerxes2 wrote:

no!!!
why should I load things I don't use?
hotplug is for "wimps"

says it all....

xerxes2 · 2004-07-28 21:16:09

I nuked my root partition a while ago, so i went through the old camera wiki and now it works as user also..

IceRAM · 2004-07-31 23:58:11

I've decided to take the plundge into udev tonight.
Everything worked.. except for the soundcard.

This is how IceRAM started reading AGAIN the Wiki and the WHOLE 7 pages before. Like a very attentive person IceRAM is, he noticed that some users used alsaconf for configuring the sound. 3 months ago, when I first configured my ArchLinux, the Docs mentioned that I only need to add the soundcard module name to the MODULES=(...) line in /etc/rc.conf.
This DOES NOT work with udev. (at least not for me, others please confirm)
tpowa, please mention this in a beautiful way in the Wiki.

I don't know how exactly but, udev likes the aliases alsaconf creates in /etc/modprobe.conf. The volumes are set kind of weird by alsaconf so I had to manually slow my soundcard using the "alsamixer" tool.
I still use the "alsamixer" script in the Wiki to store and load volumes. "/etc/rc.d/alsamixer stop" to store and "... start" to load.

uberGeek · 2004-08-01 02:23:49

IceRAM wrote:

...the Docs mentioned that I only need to add the soundcard module name to the MODULES=(...) line in /etc/rc.conf.
This DOES NOT work with udev. (at least not for me, others please confirm)...

What's alsaconf? I hacked away until I figured out what modules I need for sound and then added them to modules in rc.conf. Sound worked after that. When I switched to udev, it did not work, I spent 2 minutes in the first 3 pages of this thread and got my sound back. My two cents.

tpowa · 2004-08-01 08:19:29

alsaconf checks what module is needed for your soundcard and makes some aliases to modprobe.conf

wiki updated hope now that the sound problems are gone
perhaps the sound wiki should be updated too

Xentac · 2004-08-03 05:43:35

My sound works fine with no aliases, just rc.conf modules and udev.

colnago · 2004-08-03 05:48:41

Yeah, I have the module loaded by rc.conf, not in modprobe.conf and it works with udev. But I did it by hand, not with alsaconf.

KalephOne · 2004-08-03 13:53:16

just converted my laptop to udev - everything working beautifully, configured by hand and without hotplug 8)

KalephOne · 2004-08-04 02:33:45

Playing around with udev, i'm having a little problem.
I've managed to create a rule to make udev identify my printer and create /dev/hp0 (it was MUCH easier than I tought ).
Everything was ok, but CUPS doesnt identify it. Looks like it just identifies usb printers following the /dev/usb/lpN structure.
Have anyone tried something similar? I'm gonna try to discover something at the cups website and mailing lists.

tpowa · 2004-08-04 07:05:21

try loading usblp in rc.conf module list
then cups identifies it and
need no longer dev/usb/lpx

Arch Linux

#76 2004-07-25 10:48:33

Re: udev experience and tips

#77 2004-07-25 10:59:34

Re: udev experience and tips

#78 2004-07-25 13:11:56

Re: udev experience and tips

#79 2004-07-25 13:41:52

Re: udev experience and tips

#80 2004-07-26 18:02:20

Re: udev experience and tips

#81 2004-07-26 18:09:58

Re: udev experience and tips

#82 2004-07-26 18:30:05

Re: udev experience and tips

#83 2004-07-26 20:01:58

Re: udev experience and tips

#84 2004-07-26 20:44:41

Re: udev experience and tips

#85 2004-07-27 08:14:44

Re: udev experience and tips

#86 2004-07-28 03:45:59

Re: udev experience and tips

#87 2004-07-28 15:09:27

Re: udev experience and tips

#88 2004-07-28 15:12:19

Re: udev experience and tips

#89 2004-07-28 15:38:26

Re: udev experience and tips

#90 2004-07-28 16:05:40

Re: udev experience and tips

#91 2004-07-28 16:13:40

Re: udev experience and tips

#92 2004-07-28 21:16:09

Re: udev experience and tips

#93 2004-07-31 23:58:11

Re: udev experience and tips

#94 2004-08-01 02:23:49

Re: udev experience and tips

#95 2004-08-01 08:19:29

Re: udev experience and tips

#96 2004-08-03 05:43:35

Re: udev experience and tips

#97 2004-08-03 05:48:41

Re: udev experience and tips

#98 2004-08-03 13:53:16

Re: udev experience and tips

#99 2004-08-04 02:33:45

Re: udev experience and tips

#100 2004-08-04 07:05:21

Re: udev experience and tips

Board footer